Crushing apparatus



1,654,639 P. l.. cRowE A CRUSHING APPARATUS Jan. 3, 1928.

y Filed Oct. 20.. 1925 Patented Jan. 3, 1928.

i LPAUL L. CROWE, or BALTIMORE, MARYLAND. '7,

i CRUSHING APPARATUS.

Application sied' octoberv 20', i925. seriaiiie, ea744.

.This invention relates tocrushingyappa'- ratus and is directed more lparticularlyto an apparatusY for crushing ores, `coalaiid similar material. f j

The primary object oit the;v present invention is to provide al 'crushing z ipparatus` which, while designed especially oruse in connection with apparatus similar to that disclosed in my copendingapplications, Serial No. 63,742 and Serial No.`63,743 tiled of even date, shall also be useful in'connection with any type of apparatuswherein a. crushingof the material is to be effected.

A further object is to. provide acrushing apparatus of this general character which shall bervsiinple in construction, inexpensive to manufacture, and nwhich shall ,behighly clicientand durable in 4operation...` 2 Witli theseand other objects in view, the invention may be stated to consist'iiithe various novel" eatures of construction and arrangement for' combination, vall ,ot which will be fully described 'hereinafter' and pointed outin the appended claims. In the accompanying drawing, wherein l have'shown certain illustrative embodiments of my invention, but without intent `to limit myself thereto, n I g Fig..1` isa verticalsectional -view through a crushing apparatus constructed in accordance with my invention;y Y y Y Y Fig. 2 is a. top plan view thereotgf.v

' Y Fig. 3 is anelevation of one of the crushingplates; Y

Fig. et 1s a top plan view ot such plate; j Figs. 5, 6 and 7 are vertical sectional views, each of ainoditied formof crushingapparatus and Fig. 8 is a vertical sectional view otone element of a still apparatus. ,Il

Describing the various' parts by reference characters, and referring particularly to Figs. L4, inclusive,` 1 denotes generally one Yfurther `modiiied form oft' l of a pair of crusher plates which are pv-y o'tally mounted for oscillatoryfmoveinent, Each plategis preferably `identical inv construction and shape so as to'tacilitate manufacture and replacement." ,As sh'owni'n Fig.

l, the side wall 2 of .each plate angular, in shape and is 'providedwvithr end-,walls 3 and 4 whichA extend from the top to a point slightly below the central angular portion thereof; Extending upwardly fromA `.the

angular-,portion of ,plate on the inner face-thereofl isa wear plateA 5 Whichisfse-A Cuied i'iip'osition by screws 6. or other suit-1 The opposite .tace ot! i each plate is reinforced by lstrengtheningribev 7 and 8 arrangedvertically and-hori-y able fastening means;

zontally, respectively. The side wall 3 of each plate ris'prOvided. with an ollsetiportion l0 so that a side wall'fl of an vop'positely disposed plate vwill overlap the roiifsetl portion and present al smooth exterior surface.

The crushiiio' plates Vare eachV provided' with afpivotpin 11 that terminates in a spherif,

cal projection 19. vand the oilset portion. Lon the .opposite Wallis formed with al slot 13 iso( Whena pair yof crushing plates areass'meinbled -Qperative relation, thef Vpin in i each plateV willl engage i'n the slot fin the other,Y plate? 'and thereby' pivotally connect saidy plates. A pair-ofv springs'l inter` posed between each 'spherical projection l2 and` suitable abutments 16. carried by `,the vfraii'ieworlr of tlie`fapparati'is, normally rethe plates will perinitfthe same to open and thereby;prevent damage yto the apparatus.

vtains the;crushing'platesin operative i'ela-v Iii-"this connection, it will' bek understood 'l that where there is 'no Vsuchdanger tothe apparatus due to the character of the mate- Q -rial 4being crushed, the yielding connection l could be dispensed with and the/pivot pins engaged in' an aperture insteadfrof a slot,

such" niodiiication, being obvious, and ,hence illustration thereofv is deemed unnecessary.

The plates may be oscillated in any suit- .ablefmannen toi;exan'iple,`by a cani or eccentric il' Yjournalled, between the down- `iiia'rdly and'outwardly*directed lower' portions of` the plates, such cam loir eccentric being. engaged by' adjustable wear or contact slioeslS that are'carried by the plates. It willbe noted at this point that, if desired, one of tlie plates maybe held stationary, and the other plate above cscillated.

In operation,fthe material to be crushed sie is introduced into the hopper defined by the upper portions of the plates andpower appliedto the shaft carrying the cam or eccentricfto'rotate the ,same The shoes v 18, engage the cainandyserveftol oscillate each plate to cause tli'e'up'per portions thereof` to .v

. wherein the pivot ,pin 23 is yieldingly en-r scribed.

advance toward, andy then recede from each other and thereby effect a crushing of the material.` i

In Fig. 5, I have shown a modified forin of apparatuswherein the vertical strengthening ribs 7a are made somewhat larger than those described in connection with Figs. 1 4. These ribs are provided one with anaperture 2O that is adapted to receive a pivot pin 21, and the other with an elongated slot 22 gaged by springs Q4 interposed between said pin and end walls vdefining theslot.v IIhis arrangement serves to prevent damage to the apparatus iii-event a'particularly hard lump ofmaterial is encountered during the.

crushing operation, as such pivotal connection permits yielding between the plates. In this view also, I have illustrated the cam, or eccentric, disposed at a .greater distance from the 'p'ivot'points of the plates, hence a greater leverage is obtained between the y crushing 'j aws. In otherrespects, the apparatusis identical with thatv previously de- `In Fig. "6 I have ,illustrated crushing plates 26 pivoted at 27 aii`d` e`ach provided 'witha downwardly directed'portion 28 that terminates in an arcuate end portion V29. A cani arranged within the arcuate end portions is engaged by adjustable wear-plates 18, as "previously described.

InFig. 7,'I have vshown a further modification wherein the plate oscillatory meansi islarranged above ther crushing aws thereof. In this instance, each plate isprovided with a downwardly directed portion 82 and ani-nwardly directed portion 33. The end walls 34 and 35 overlap, asin previous illustrations. -An enlarged strengtheningrib 36 is formed on each plate and suitablepivot pins Il and` slots 13a are formed in Aeach end wall, or, if desired, these plates may be pivote'dsimilarto that disclosed in connection with Fig. 5 yand 'as indicated in 'dotted lines. The upper end portion of veach plate is, Vprovided with an adjustable screw 37 that is adapted to be engaged by a cam 38 to oscillate the plates about their pivot points and thus effect a crushing actionv on the ma' t'erial'introduced therebetween. y

VIn Fig. 8, I have shown a still-further modification, wherein each crushing plate 40 is .formed with eccentric'straps 4l `at the lower end thereof and suoli strapsareV provided with adjustable contact shoes 18b for shown.

engagement with a. cam or eccentric, not

Each plate is adapted to be pivoted at 42 and operates similar to those previously referred to. Y

In any of the foregoing illustrations, it will be understood that the cam 'or eccentric maybe carried by a hollow shaft, a solid shaft or any other type of shaft, andisuch shaft forms no part of the present invention.

inwardly directed portion defining` a crushing jawandadownwardly and outwardly directed portion'deiiiiing a cam engaging plate,l means vfor pivotally suporting ysaid plates at points adjacent vthe apex of the Yan,- gle delined by said portions, .and a cam interposed between the downwardly andv outwardly 'directed portions of said plates and adapted to engage both platessimultaneouslyto oscillate the. same.

a 'pair of '3L A crushing apparatus of the character ldescribed comprising a pair ofl crushing plates, each plate 'having a 'downwardly and inwardly directed portion deiining'a crushing jaw and a downwardly and outwardly directed Vportion deliningfacam engaging plate, means for pivotally and yieldingly supporting said plates .at points adjacent the 'apex of ythel angle defined by said portions, a'single cani interposed between the downwardly and outwardly directed portions of said plates, and-an adjustably mounted wear plate carried by each plate and adapted to be engaged by .sai-d cam.

n 4. A crushing apparatus olV the-character described comprising a pair of lcrushi'ng plates, each plate having a downwardly and inwardly directed portion delining la crush-V in'g jaw and a'downwardly land 'outwardly directed portion defining a cam engaging. plate, 'side walls carried by said plates, said" sidewalls having l offset portions yarranged l infoverlapping relation, ypivot pins extending throughr vthe `overlapping portions of said sidewalls, anda caindisposed between said "downwardly and 'outwardly directed portions and adapted .to simultaneouslyengage bot-h plates; f-

5. A crushing apparatus of. the character described comprising a pair of. crushing plates, each plate having a downwardly and inwardly directed portion defining a crushing ljaw and a downwardly and-outwardly directedr portion Adefining 'a cam vengaging plate, side walls carried vley-'said plates, said -side walls having offset portions arranged vin 'overlapping relation, pivotppins extending through the overlapping portionsof said side walls, means associated with. said pivot Vpins for yieldingly retaining Asaid plates in normal crushing relation but perinitting the pivotal connection between saidk plates to yield upon excessive pressure therebetween, and cam means interposed between' the downwardly and outwardlyA directed side walls having ollj'set portions arranged in overlapping relation, pins extending through the overlapping portions oi said side walls for pivotally connecting said plates, springs disposed on each side of said pins and engaged withv a fixed abutment yand said pins to yieldingly retain said crushingl jaws in normal crushing relation, a cam interposed between said downwardly andout wardly directed portions, and adjustable wear plates. carried by the last ymentioned portions of said plates and adapted to be engaged by said cam. l i

, 7, A crushing app'aratus'of the character described comprising a pair of oppositely arranged crushing plates each Ahaving side walls, a sidewall of each of said plates vhaving an offset portionadapted to'overlap thel side wall of the opposite plate, pins extending through the overlapping portions of said plates and pivotally 'connecting said plates together, springs interposed between said pins and a iixed abutment for yieldingly reA j taining said plates in normal crushing relationbutpermitting said plates to yield at their pivotal points upon excessive pressure therebetween, and a cam ywheel interposedbetween said plates and having diametrical ,i

lyoppositely disposed cani portions adapted Vto engage said platesto elect' an oscillatory motion of said plates. y i

In testimony whereof I aliix my signature.

PAUL L. cRown. 

